Process of waterproofing and ornamenting objects.



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fo ta whom it may concern:

Be it known that l, DAVID lFxSnorn, a

citizen of the United States, residing at Portland, in the county ofMultnomah and State of Oregon, have invented new and useful Improvementsin Processes of Waterproofing and Ornamenting the following is aspecification. My invention relates to a class of processes or methodsof waterproofing various objects or materials in place and at the sametime to ornament them if desired.

"The object of my invention is to provide a process or method whereinand whereby a desired waterproofing composition may be edectivelyapplied to the surface of materials, for example, brick,-stone, concreteand many others, in such a manneras to make them non-absorbent ofmoisture and nonrece tive of water. Also in the process to app ycoloring and ornamental materials to such surfaces. My process is thusapplicable to the surface of material in place in buildings and variousstructures, asalso to concrete, brick and other materials in ornamentalobjects, such as urns, vases, flower boxes, clock, etc. These objects,as well as others, I accomplish by the prmess or method hereinafterdescribed. It should be primarily kept mind, that my said process isintended to be and is used upon materials, either in place, or ready tobe put in place. The process is applied to sub ects composed ofmaterials which .are already formed, cured or in such state that thesurfaces thereof may be treated as herein described. In other words, myprocess is not intended to be employed for ob ects hav- Objects, ofwhich] 1:: "rd earners,

dpeotfleatlon of lLettert fatent. .Pmttamtnfi {fume $5, fifth hppllcadonmed November 1917. aerial lfo. data.

m a distance with a strikin-er mg force, or, else such compositions arespread over and upon the surface to be treated by an implement whichspreads and presses the composition into 7 an adhesion upon the surface,but, in either. case, always in an irregular and faulty manner. Thecompositions thus used have been generally a cementitious mortar mixedwith" a 1rd or fine gravel and water, or a like composition. The failureof all prior methods has been due to the fact that a trowel or spreaderim- :pearance offthe finished work,

plement necessarily involvesthe application of a greater uantity ofmaterial to thesurface treated t an itrequires, also tothe fact thatsuch a process invariably tends to draw the moisture and richer materialof the mixture outwardl toward the implement used, and thus to isturbthe proper balance or cohesion of the elements of the composition, andmakes a poor bond. This weakens its binding qualities or adhesiveproperties in relation to the treated surface, and intimo causes thecomposition to peel or split away. In such event it is practicallyimpossible to patch the work, and the surface must be treated agam as awhole, often many times.

Further, the cement gun, or any other means of applying suchcompositionsfby 'themupon the treated surface from a distance, arefailures for like reasons, and undoubtedly more so. These last methodsobviously will never result in a satisfactory a and they Wlll strain ordisplace the material in a manner to deteriorate or destroy its adhesiveproperties in relation to the treated surface, to

. such an extent that moisture is invariably ing their composingmaterial in a semi-dry or plastic state; with a view to m 1.: g thcomposition I so employ an'lnte al part thereof while such ob ects arein t at state.

In the prior practice of the art appertaining to my invention, themethods usually employed have required the use of a trowel or some floatimplement, or what is commonly hown as the cement fiunf, or some othermeans whereby a so-calle waterproofingor ornamental composition or acomb}.

nation thereof, has been applied to a surface to overcome all priorabsorbed through the imperfections, and expansion and contractionmevitably occur, all of which causes the material to become loose and intime peel or fall away.

lln-my present process or art I have sough dificulties and particularlythose of the kind which have caused failures such as are referred to.

In practical usually employ a plastic material composed of hydrauliccement, hydrated lime, coloring material, and mica in desired jdsuitable proportions, to, which ltll) water is added in suflicientquantity to form the whole mass into a paste or slurry. The mica. usedat this stage is only for the purpose of-retarding the settin of thecompositionduring my process. a for ornamental purposes is addedafterward as further described.

Having prepared a suitable com osition of waterproofing nature,ornamenta ly colored, the art or process of its application which'I haveinvented is as now described.

The surface to be. treated must be first thoroughly moistened andcleaned. The composition while in pasty condition, is then applie to andrubbed upon and into the sur ace to be treated by means of a brush orstubby broom, wlelded with a movement as in scrubbing, to cause only theminimum required amount of the mate rial to adhere to and bind itselfuniformly u on the surface. Only a suitable portion 0 the surface mustbe thus treated at a time, in order that the material shall not hardenor set before the next ste in the process. When a desired amount 0 thematerial is thus rubbed into the surface, the operator next employs abrush with stiff bristles, which must be of asuitable and convenientform, size and weight for the purpose. In practice I have found thus farmost adaptable, a brush with tough rice root bristles about one andone-half inches long, loose woven and wire drawn said brush having ahandle of suitable length the better to facilitate striking with thebrush. Before the material has set, the operator strikes upon it withthe brush, impinging blows through the bristles. This is the ste whichcauses the material to adhere uni ormly and bind itself upon the surfacein an effective manner. Thereby the voids are completely filled with theminimum amount 0 material required and the surface presents an even andfinished appearance in the nature of a tapestry effect. If it is desiredto use mica for further ornament, to produce a reflecting or sparklingsurface, the o erator employs mica ground to a desired neness. This isap lied immediately after the binding or finishing brush is used and maybe sprink led, thrown or blown upon the material while moist, and insuch quantity as may be desired. The mica partlcles are then retainedadhesively in the material with their outer or exposed/parts clean andbrilliant.

In this connection, it will be noted that prior methods have allrequired that the ornamental mica be either included in the compositionat the outset or forced into it while spread upon the surface in a softcondition and in a manner which causes all parts of the mica to becovered with the composition. This necessitated later treating of thesurface of the hardened or set material with acid, or brushin or scraing it to polish the outstandin ang es of t e mica particles to make are acting or sparklin effect. T1118 never produced entirely satis actoryresults, was expensive, and yielded a cor or damaged surface of thewhole wor This cannot occur with mica used as I describe.

The process which I have thus described must be closely followed, andimplements of the character mentioned must be employed to accomplish theresults I have thus obtained successfully. Therein resides my novel anduseful invention of this'art. The composition which I have hereindescribed is one with which I can effectively apply my process, as Ihave proved in t e practice thereof. I may however use othercompositions of a like character with equal success.

When applied as I have described I obtain a ery desirable tapestryfinished surface efect.

Having described my invention herein, I claim:

1. In a process of the character described a method which consists inapplying a minimum amount of a suitable waterproofing composition in aplastic state upon the finished surface of an object, as follows, first,by applying said composition to a suitable portion of the surface at atime by means of a brush or stubby broom wielded in the operation with amovement as in scrubbing until the minimum amount of the composition isrubbed upon and into the surface and adheres thereto uniformly, second,causing the composition, while slowly setting or hardening, to adherethoroughly u on the treated surface in a manner to c ose all pores andform the com osition into a coating over the treated sur ace, imperviousto moisture, accomplished by means of a suitable brush having stiffbristles and with it striking the composition all over its surface withimpinging blows through the bristles, before the setting takes place,substantially as described.

2. Ina process of the character described a method which consists inapplying a minimum amount of a suitable waterproofing composition in aplastic state upon the finishe surface of an object, as follows, first,by applying said composition to a suitable portion of the surface at atime by means of a brush or stubby broom wielded in the operation' witha movement as in scrubbin until the minimum amount of the composition isrubbed upon and into the surface "and adheres thereto uniformly, second,causing the composition, while slowly setting or hardening, to adherethoroughly u on the treated surface in a manner to c ose all pores andform the composition into a coating over the treated surface, imperviousto moisture, accomplished by means of a suitable brush having stiffbristles and with it strihng the composition all over its surin a mannerto leave the-exposed mica parts face with impinging blows through thebrisnaturally brilliant Without further treattles, before the settingtakes place, third, ment thereof, substantially as described. after thelast step, to sprinkle, cast or blow I DAVID F, SHUPE.

5 upon the composition, While yet plastic, Witnesses:

mica, ground to a desired fineness, until the Gno. 1F. Fnms, same hasfirmly adhered to the composition R. BUSHNELL Porrs.

